Steve Cohen article

Cohenâs natural ability as a tape reader has been a big part of his success, former employees say. In addition to trading his own stocks and overseeing 300 managers, analysts and traders globally, Cohen buys and sells âminis,â says one former employee.

âMiniâ is short for a security called the S&P 500 E-mini future, an electronically traded derivative that rises and falls with the Standard & Poorâs 500 Index and is sold in smaller units than other index futures.